By the sounds of it, when things melted or maybe before you lost the neutral and ended up putting somewhere near 200 volts into you appliances which they didn't like and resulted in frying them. Sounds like you're looking at an expensive repair replacing most of your appliances.
Once repaired invest in a GOOD EMS to protect you from such issues, cheap insurance in the long run.
Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.